Alfa-laval Thermal Ab

Alfa Laval Corporate Ab

Jan-Ove Bergqvist

Jarl A Andersson

Magnus Svensson

Ralf Erik Blomgren

A method and device, for a heat exchanger which is provided with gaskets, for assessing and detecting the risk of fluid leakage in the heat exchanger due to worn-out gaskets. In the heat exchanger, a heat transfer plate () with gasket () is provided with a pressure sensor () which monitors the pressure between the plate () and the gasket (). A further sensor is adapted to the heat exchanger for monitoring the pressure of the fluid entering the heat exchanger.

Method and device for assessing the risk of fluid leakage in a heat exchanger with sensor

A plate heat exchanger includes a package of heat transfer plates. The heat transfer plates are provided with inlet ports therethrough forming an inlet channel through the package. A sealing means is arranged between the heat transfer plates and forms, together with the heat transfer plates, a first flow passage for one fluid in every second plate interspace and a second flow passage for a heating fluid in each of the remaining plate interspaces. The inlet channel communicates with each first flow passage through at least one inlet passage while being blocked from communication with each second flow passage by part of the sealing means located in a first sealing area that extends around the inlet channel. Every two adjacent heat transfer plates which delimit the first flow passage have an essentially tight surface abutment against each other in a second sealing area. The inlet passage is delimited by at least one of the two adjacent heat transfer plates between its inlet port and the first sealing area.

Plate heat exchanger

Plate heat exchanger with leakage detector

Permanently joined plate heat exchanger

A plate heat exchanger especially adapted for viscous fluids or fluids containing fibers has spacing means extending above the normal corrugations thus widening the normal interplate channels and the inlets and outlets to and from said channels are formed by juxtaposing the plates containing ports forming said inlets and outlets to give the maximum throughflow.

Growing community of inventors

Malmo, Sweden

Jan-Ove Bergqvist